Tool for encoding / decoding with the Base62 encoding system, using all alphanumeric characters (upper and lower case) forming a base 62.
Base62 Encoding - dCode
Tag(s) : Character Encoding
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Base62 Encoding
Base-62 Decoder
Base-62 Encoder
Answers to Questions (FAQ)
What is Base-62? (Definition)
The base62 is an encoding method with 62 characters (ie all alphanumeric characters: digits 0-9, upper case letters A-Z and lower case a-z) allowing the encoding of binary strings. The 62 symbols used in this base 62 are (in this order): 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.
Example: Base62 is encoded KixpUr22
Example: Base62 is decoded 169958929504 or the binary data 00100111,10010010,01010111,01110100,01100000
How to encrypt using Base62 cipher?
The binary data string is converted to base 62 (by a classical change of arithmetic base), the indexes of the 62 symbols are:
| 0 | 0 | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | A | 11 | B | 12 | C | 13 | D | 14 | E | 15 | F | 16 | G | 17 | H | 18 | I | 19 | J |
| 20 | K | 21 | L | 22 | M | 23 | N | 24 | O | 25 | P | 26 | Q | 27 | R | 28 | S | 29 | T |
| 30 | U | 31 | V | 32 | W | 33 | X | 34 | Y | 35 | Z | 36 | a | 37 | b | 38 | c | 39 | d |
| 40 | e | 41 | f | 42 | g | 43 | h | 44 | i | 45 | j | 46 | k | 47 | l | 48 | m | 49 | n |
| 50 | o | 51 | p | 52 | q | 53 | r | 54 | s | 55 | t | 56 | u | 57 | v | 58 | w | 59 | x |
| 60 | y | 61 | z |
Example: The string dCode, encoded in ASCII (01100100,01000011,01101111,01100100,01100101) is equivalent to the decimal number $ 430628103269_{(10)} $, which can be converted to base 62 in $ {7, 36, 3, 5, 39, 26, 53}_{62} $ or the characters 7a35dQr.
How to decrypt Base62 cipher?
Take the base62 string and note the indexes of each character to obtain a base 62 number. Convert this number into binary or directly encode it in ASCII (or Unicode) to obtain the plain message.
Example: Decode R0Ow, R is 27, 0 is 0, O is 24 and w is 58 either the number $ {27,0,24,58}_{62} $ or in decimal $ 6436402_{(10)} $ or in binary $ 11000100011011000110010_{(2)} $ or b62 in ASCII code.
How to recognize a Base62 ciphertext? (Identification)
Base-62 encoded strings contain only alphanumeric characters: numbers, uppercase and lowercase letters.
Source code
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Cite as source (bibliography):
Base62 Encoding on dCode.fr [online website], retrieved on 2024-04-26,
